compaq armada 100s and User Manual
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1-24Product Description COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED Writer: David Calvert Saved by: The Integrity Group Saved date: 09/27/00 9:48 AM Part Number: 177485-002 File name: Ch01 The external components on the rear of the computer are shown in Figure 1-4 and described in Table 1-6. Figure 1-4. Rear Components Table 1-6 Rear Components Item Component Function 1 Mono microphone jack Connects a mono microphone, disabling the built-in microphone. 2 Stereo speaker/ headphone jack Connects stereo speakers, headphones, or headset. This jack is driven by an amplifier and has volume control. The internal computer speakers are turned off when external speakers or headphones are plugged into this jack. 3 Universal Serial Bus (USB) connector Connects USB devices, such as cameras for video conferencing, or hubs which connect multiple USB devices. The USB connector is a powered hub. When running Windows 98, any combination of up to five powered or unpowered hubs can be connected in any sequence, as long as two unpowered hubs are not connected next to each other. When running a lower version of Windows, or if using a different operating system, up to two hubs can be connected. 4 Parallel connector Connects an optional parallel device, such as a printer. 5 Serial connector Connects optional serial devices, such as a mouse. continued
Product Description1-25 COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED Writer: David Calvert Saved by: The Integrity Group Saved date: 09/27/00 9:48 AM Part Number: 177485-002 File name: Ch01 Table 1-6 continued Item Component Function 6 External monitor connector Connects an optional external monitor, overhead projector, or TV adapter. 7 Keyboard/mouse connector Connects an optional full-sized keyboard or a mouse. Both external mouse and computer pointing device are active. An optional splitter/adapter allows both an external keyboard and mouse to be used at the same time. 8 AC Adapter connector Connects the AC power adapter.
Troubleshooting2-1 COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED Writer: David Calvert Saved by: The Integrity Group Saved date: 09/26/00 2:34 PM Pages: 8 Words: 1301 Template: c:\program files\microsoft office emplates\compaq ef.dot Part Number: 177845-002 File name: Ch02 chapter 2 TROUBLESHOOTING 2.1 Service Considerations When troubleshooting the Compaq Armada 100S and Notebook 100, it is important to obtain all facts about the situation. Obtain details of the problem and any circumstances surrounding the problem. Obtain all error codes or beep codes. Once all facts have been gathered, determine possible causes and search for issues. 2.2 Basic Troubleshooting Checklist Use the following checklist in the event minor problems are encountered: Is the computer connected to an external power source or does it have a fully charged battery pack installed? Is the computer turned on and is the power indicator illuminated? Are all cables connected properly and secure? Did the diskette drive contain a non-bootable diskette when the system was powered up? Does the computer have all necessary device drivers? Have printer drivers been installed for each application? Was the Windows operating system properly exited? Has the computer hard drive been scanned for viruses?
2-2Troubleshooting COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED Writer: David Calvert Saved by: The Integrity Group Saved date: 09/26/00 2:34 PM Part Number: 177845-002 File name: Ch02 2.3 Power-On Self Test (POST) When the computer starts, the system BIOS runs a series of internal checks on the hardware. This allows the computer to detect problems as early as the power-on stage. The POST alerts you to problems by displaying error messages. If POST detects an error, the system displays an error message on the display. If the error occurs before the display comes up, error codes or system beeps indicate the POST error. The value for diagnostic POST (378H) is written at the beginning of the test. Therefore, if the test fails, you can determine where the problem occurred by reading the last value written to POST 378H by the PIO Debug Board Plug at the PIO port. The following table lists error codes in sequential order on the PIO Debug Board. Table 2-1 Error Codes Code Description 01h Start of boot loader sequence. 02h Initialize chipset. 03h Memory sizing. 04h Perform conventional RAM (1st 640K) test with crossed pattern R/W. 05h Move boot loader to the RAM. 06h Start point of execution of boot loader in RAM. 07h Shadow screen BIOS. 08h Initialize clock synthesizer. 09h Initialize audio controller. 0Ah Detect internal ISA modem. 0Bh Proceed with normal boot. 0Ch Proceed with crisis boot. 0Fh DRAM sizing. 10h Initial L1, L2 cache, make stack and diagnose. 11h Turn off fast A20 for POST, Reset GDT’s, 8259’s quickly. continued
Troubleshooting2-3 COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED Writer: David Calvert Saved by: The Integrity Group Saved date: 09/26/00 2:34 PM Part Number: 177845-002 File name: Ch02 Table 2-1 continued Code Description 12h Signal power on reset on COMS. 13h Initialize the chipset (DRAM). 14h Search for ISA bus VGA adapter. 15h Reset counter/timer 1, excite the RAM. 16h User register config. 18h Dispatch to 1st 64K RAM test. 19h Checksum the ROM. 1Ah Reset PIC’s (8259s). 1Bh Initialize video adapter(s). 1Ch Initialize video (6845 regs). 1Dh Initialize color adapter. 1Eh Initialize monochrome adapter. 1Fh Test 8237A page registers. 2Oh Perform keyboard self-test. 21h Test and initialize keyboard controller. 22h Check if RAM valid. 23h Test battery fail & X-SUM. 24h Test DMA controllers. 25h Initialize 8237 controller. 26h Initialize interrupt vectors table. 27h RAM quick sizing. 28h Protected mode entered safely. 29h RAM test completed. 2Ah Protected mode exit successful. 2Bh Setup shadow. 2Ch Prepare to initialize video. 2Dh Search for monochrome adapter. 2Eh Search for color adapter, VGA initialize. continued
2-4Troubleshooting COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED Writer: David Calvert Saved by: The Integrity Group Saved date: 09/26/00 2:34 PM Part Number: 177845-002 File name: Ch02 Table 2-1 continued Code Description 2Fh Sign-on messages displayed. 30h Special init of keyboard ctlr. 31h Test if keyboard present. 32h Test keyboard interrupt. 33h Test keyboard command Byte. 34h Test, blank, and count all RAM. 35h Protected mode entered safely (2). 36h RAM test complete. 37h Protected mode exit successfully. 38h Update keyboard output port to disable gate of A20. 39h Setup cache controller. 3Ah Test if 18.2Hz periodic working. 3Bh Initialize BIOS data area at 40.0. 3Ch Initialize the hardware interrupt vector table. 3Dh Search and initialize the mouse. 3Eh Update NUMLOCK status. 3Fh OEM initialization of COM and LPT ports. 40h Configure the COM and LPT ports. 41h Initialize the diskette drive. 42h Initialize the hard disk. 43h OEM’s unit of PM with USB. 44h Initialize additional ROMs. 45h Update NUMLOCK status. 46h Test for coprocessor installed. 47h OEM’s unit of power management (check SMI). 48h OEM’s functions before boot (PC Card, CardBus). 49h Dispatch to operation system boot. 4Ah Jump into bootstrap code.
Troubleshooting2-5 COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED Writer: David Calvert Saved by: The Integrity Group Saved date: 09/26/00 2:34 PM Part Number: 177845-002 File name: Ch02 2.4 Solving Common Problems Table 2-2 Power Problem Possible Cause Solution The power button is pressed and nothing happens. The power indicator does not light up. No AC or battery power. Check to ensure the AC adapter is plugged in. Check to ensure the battery is charged. Try another working battery or adapter. Table 2-3 Display Problem Possible Cause Solution There is no display on either the internal LCD or an external monitor.I/O devices and cables causing a problem. Try a working monitor or LCD. Check SW4 for proper switch settings. Remove I/O devices and cables and reconnect one by one to determine which is causing the problem. Table 2-4 VGA Controller Failure Problem Possible Cause Solution There is no display on either the internal LCD or an external monitor, yet the system passed POST.Faulty LCD or Monitor. Try another working monitor or LCD module. Remove I/O devices and cables and reconnect one by one to determine which is causing the problem.
2-6Troubleshooting COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED Writer: David Calvert Saved by: The Integrity Group Saved date: 09/26/00 2:34 PM Part Number: 177845-002 File name: Ch02 Table 2-5 LCD No Display Problem Possible Cause Solution The LCD shows nothing or abnormal picture. The picture is fine on an external monitor. Improper switch settings. Faulty LCD display. Cables not installed properly. LCD is not active (toggle Fn+F5). Check to see if SW4 is set properly. Try a working LCD display. Check if D/A BD is good. Make sure cables are installed properly. Table 2-6 External Monitor No Display Problem Possible Cause Solution The CRT monitor shows nothing or abnormal color. The picture is fine on the LCD. Monitor power cord not installed properly. CRT monitor cable not installed properly. CRT monitor is faulty. External display not active (toggle Fn+F5). Check the monitor’s power cord. Check the CRT monitor cable. Try a working monitor.
Troubleshooting2-7 COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED Writer: David Calvert Saved by: The Integrity Group Saved date: 09/26/00 2:34 PM Part Number: 177845-002 File name: Ch02 2.5 Test Errors The following topics contain checklists to help isolate and correct errors generated during POST. Memory Test Error Check extended SDRAM modules for proper installation. Visually inspect the SDRAM socket for bent pins. Try a working SDRAM module. Keyboard Test Error Check the keyboard cable. If using an external PS/2 keyboard, ensure that it is working properly by testing a working keyboard. Diskette Drive Test Error Ensure that BIOS is set up correctly. Use the SCU to verify. Ensure that the diskette drive is connected properly. Try another working diskette drive. CD-ROM Drive Test Error Try another working CD. Ensure that the CD-ROM drive is connected properly. Try another working CD-ROM drive. Hard Drive Test Error Check the hard disk drive settings. Try another working hard disk drive.
2-8Troubleshooting COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED Writer: David Calvert Saved by: The Integrity Group Saved date: 09/26/00 2:34 PM Part Number: 177845-002 File name: Ch02 USB Board Test Error Ensure that the USB device is installed properly. Ensure that the USB driver is installed. Verify that the USB device conforms to the correct standard, UHCI as opposed to OHCI. Try another working UHCI device. Serial Port Test Error Ensure that the mouse or other I/O devices are installed properly (including associated drivers). Ensure that the COM port is set properly. Try another working device. Parallel Port Test Error Ensure that the PIO device is installed properly. Check the LPT port settings. Try another working device. Audio Failure Ensure that all cables and devices are connected properly. Ensure that the appropriate software drivers are installed. Try another working speaker, cable, and CD-ROM. Ensure that there are no address or IRQ conflicts.